tender for providing cable tray & associated works at te bldg kidwai bhawan, mtnl, nd; 1 supplying and installing following size of perforated painted with powder coating m.s. cable trays with perforation not more than 17.5%, in convenient sections, joined with connectors, suitable bendsduly suspended from the ceiling with m.ssuspenders metallic dash fasterners / wall-mountedms supports of suitable size & sufficient strength with spacing between two suspenders / supports not more than 1200mm including making opening in the wall / floor / welding on heavy duty ms pipe / iron structure& repairing of the same to the original finish etc. complete as reqd..a ) 150 mm width x 50 mm depth x 1.6 mm thickness 2 b ) 300 mm width x 50 mm depth x 1.6 mm thickness 3 dismantling of existing old rusted / faulty cable trays of sizes150 mm width x 50 mm depth x 1.6 mm / 225 mm width x 50 mm depth x 1.6 mm thickness thickness from site and hand over it to electrical enquiry ( kbn ) and shifting of existing electrical cables of different sizes in newly installed cable trays i / cfixing, connectionproperly etc as reqd.